Undescended testicle pose any cancer risk?

YES.....: Testicles mostly descend at birth. If not, by 3-4 months. Spontaneous descent after 6 months is rare. By 1 year, changes related to fertility begins if testes remains in the abdomen. Complications of undescended testes: inguinal hernia, testicular torsion/trauma; sub-fertility and cancer. Surgical descend is recommended from 6 months age, and preferably before 2 years age.

Slight: Increased risk is primarily with intra-abdominal udts. Most quoted risk in literature for intra-abdominal udts is 1:15 or 4%. Risk cancer in low inguinal udts is minimal. Risk for high inguinal is inbetween. 1 in 6 patients who have unilateral udt ; develop testicular cancer have it in the descended testis. Advise all undescended testes be brought down far enough to be palpable in case of cancer.